drivers/net/wireless/rt2x00/rt2400pci.c

   1 /*
   2         Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
   3         <http://rt2x00.serialmonkey.com>
   4
   5         This program is free software; you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation; either version 2 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to the
  17         Free Software Foundation, Inc.,
  18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22         Module: rt2400pci
  23         Abstract: rt2400pci device specific routines.
  24         Supported chipsets: RT2460.
  25  */
  26
  27 #include <linux/delay.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/pci.h>
  33 #include <linux/eeprom_93cx6.h>
  34
  35 #include "rt2x00.h"
  36 #include "rt2x00pci.h"
  37 #include "rt2400pci.h"
  38
  39 /*
  40  * Register access.
  41  * All access to the CSR registers will go through the methods
  42  * rt2x00pci_register_read and rt2x00pci_register_write.
  43  * BBP and RF register require indirect register access,
  44  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  45  * These indirect registers work with busy bits,
  46  * and we will try maximal REGISTER_BUSY_COUNT times to access
  47  * the register while taking a REGISTER_BUSY_DELAY us delay
  48  * between each attampt. When the busy bit is still set at that time,
  49  * the access attempt is considered to have failed,
  50  * and we will print an error.
  51  */
  52 #define WAIT_FOR_BBP(__dev, __reg) \
  53         rt2x00pci_regbusy_read((__dev), BBPCSR, BBPCSR_BUSY, (__reg))
  54 #define WAIT_FOR_RF(__dev, __reg) \
  55         rt2x00pci_regbusy_read((__dev), RFCSR, RFCSR_BUSY, (__reg))
  56
  57 static void rt2400pci_bbp_write(struct rt2x00_dev *rt2x00dev,
  58                                 const unsigned int word, const u8 value)
  59 {
  60         u32 reg;
  61
  62         mutex_lock(&rt2x00dev->csr_mutex);
  63
  64         /*
  65          * Wait until the BBP becomes available, afterwards we
  66          * can safely write the new data into the register.
  67          */
  68         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
  69                 reg = 0;
  70                 rt2x00_set_field32(&reg, BBPCSR_VALUE, value);
  71                 rt2x00_set_field32(&reg, BBPCSR_REGNUM, word);
  72                 rt2x00_set_field32(&reg, BBPCSR_BUSY, 1);
  73                 rt2x00_set_field32(&reg, BBPCSR_WRITE_CONTROL, 1);
  74
  75                 rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
  76         }
  77
  78         mutex_unlock(&rt2x00dev->csr_mutex);
  79 }
  80
  81 static void rt2400pci_bbp_read(struct rt2x00_dev *rt2x00dev,
  82                                const unsigned int word, u8 *value)
  83 {
  84         u32 reg;
  85
  86         mutex_lock(&rt2x00dev->csr_mutex);
  87
  88         /*
  89          * Wait until the BBP becomes available, afterwards we
  90          * can safely write the read request into the register.
  91          * After the data has been written, we wait until hardware
  92          * returns the correct value, if at any time the register
  93          * doesn't become available in time, reg will be 0xffffffff
  94          * which means we return 0xff to the caller.
  95          */
  96         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
  97                 reg = 0;
  98                 rt2x00_set_field32(&reg, BBPCSR_REGNUM, word);
  99                 rt2x00_set_field32(&reg, BBPCSR_BUSY, 1);
 100                 rt2x00_set_field32(&reg, BBPCSR_WRITE_CONTROL, 0);
 101
 102                 rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
 103
 104                 WAIT_FOR_BBP(rt2x00dev, &reg);
 105         }
 106
 107         *value = rt2x00_get_field32(reg, BBPCSR_VALUE);
 108
 109         mutex_unlock(&rt2x00dev->csr_mutex);
 110 }
 111
 112 static void rt2400pci_rf_write(struct rt2x00_dev *rt2x00dev,
 113                                const unsigned int word, const u32 value)
 114 {
 115         u32 reg;
 116
 117         if (!word)
 118                 return;
 119
 120         mutex_lock(&rt2x00dev->csr_mutex);
 121
 122         /*
 123          * Wait until the RF becomes available, afterwards we
 124          * can safely write the new data into the register.
 125          */
 126         if (WAIT_FOR_RF(rt2x00dev, &reg)) {
 127                 reg = 0;
 128                 rt2x00_set_field32(&reg, RFCSR_VALUE, value);
 129                 rt2x00_set_field32(&reg, RFCSR_NUMBER_OF_BITS, 20);
 130                 rt2x00_set_field32(&reg, RFCSR_IF_SELECT, 0);
 131                 rt2x00_set_field32(&reg, RFCSR_BUSY, 1);
 132
 133                 rt2x00pci_register_write(rt2x00dev, RFCSR, reg);
 134                 rt2x00_rf_write(rt2x00dev, word, value);
 135         }
 136
 137         mutex_unlock(&rt2x00dev->csr_mutex);
 138 }
 139
 140 static void rt2400pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
 141 {
 142         struct rt2x00_dev *rt2x00dev = eeprom->data;
 143         u32 reg;
 144
 145         rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
 146
 147         eeprom->reg_data_in = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_IN);
 148         eeprom->reg_data_out = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_OUT);
 149         eeprom->reg_data_clock =
 150             !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_CLOCK);
 151         eeprom->reg_chip_select =
 152             !!rt2x00_get_field32(reg, CSR21_EEPROM_CHIP_SELECT);
 153 }
 154
 155 static void rt2400pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
 156 {
 157         struct rt2x00_dev *rt2x00dev = eeprom->data;
 158         u32 reg = 0;
 159
 160         rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_IN, !!eeprom->reg_data_in);
 161         rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_OUT, !!eeprom->reg_data_out);
 162         rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_CLOCK,
 163                            !!eeprom->reg_data_clock);
 164         rt2x00_set_field32(&reg, CSR21_EEPROM_CHIP_SELECT,
 165                            !!eeprom->reg_chip_select);
 166
 167         rt2x00pci_register_write(rt2x00dev, CSR21, reg);
 168 }
 169
 170 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 171 static const struct rt2x00debug rt2400pci_rt2x00debug = {
 172         .owner  = THIS_MODULE,
 173         .csr    = {
 174                 .read           = rt2x00pci_register_read,
 175                 .write          = rt2x00pci_register_write,
 176                 .flags          = RT2X00DEBUGFS_OFFSET,
 177                 .word_base      = CSR_REG_BASE,
 178                 .word_size      = sizeof(u32),
 179                 .word_count     = CSR_REG_SIZE / sizeof(u32),
 180         },
 181         .eeprom = {
 182                 .read           = rt2x00_eeprom_read,
 183                 .write          = rt2x00_eeprom_write,
 184                 .word_base      = EEPROM_BASE,
 185                 .word_size      = sizeof(u16),
 186                 .word_count     = EEPROM_SIZE / sizeof(u16),
 187         },
 188         .bbp    = {
 189                 .read           = rt2400pci_bbp_read,
 190                 .write          = rt2400pci_bbp_write,
 191                 .word_base      = BBP_BASE,
 192                 .word_size      = sizeof(u8),
 193                 .word_count     = BBP_SIZE / sizeof(u8),
 194         },
 195         .rf     = {
 196                 .read           = rt2x00_rf_read,
 197                 .write          = rt2400pci_rf_write,
 198                 .word_base      = RF_BASE,
 199                 .word_size      = sizeof(u32),
 200                 .word_count     = RF_SIZE / sizeof(u32),
 201         },
 202 };
 203 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 204
 205 #ifdef CONFIG_RT2X00_LIB_RFKILL
 206 static int rt2400pci_rfkill_poll(struct rt2x00_dev *rt2x00dev)
 207 {
 208         u32 reg;
 209
 210         rt2x00pci_register_read(rt2x00dev, GPIOCSR, &reg);
 211         return rt2x00_get_field32(reg, GPIOCSR_BIT0);
 212 }
 213 #else
 214 #define rt2400pci_rfkill_poll   NULL
 215 #endif /* CONFIG_RT2X00_LIB_RFKILL */
 216
 217 #ifdef CONFIG_RT2X00_LIB_LEDS
 218 static void rt2400pci_brightness_set(struct led_classdev *led_cdev,
 219                                      enum led_brightness brightness)
 220 {
 221         struct rt2x00_led *led =
 222             container_of(led_cdev, struct rt2x00_led, led_dev);
 223         unsigned int enabled = brightness != LED_OFF;
 224         u32 reg;
 225
 226         rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
 227
 228         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
 229                 rt2x00_set_field32(&reg, LEDCSR_LINK, enabled);
 230         else if (led->type == LED_TYPE_ACTIVITY)
 231                 rt2x00_set_field32(&reg, LEDCSR_ACTIVITY, enabled);
 232
 233         rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
 234 }
 235
 236 static int rt2400pci_blink_set(struct led_classdev *led_cdev,
 237                                unsigned long *delay_on,
 238                                unsigned long *delay_off)
 239 {
 240         struct rt2x00_led *led =
 241             container_of(led_cdev, struct rt2x00_led, led_dev);
 242         u32 reg;
 243
 244         rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
 245         rt2x00_set_field32(&reg, LEDCSR_ON_PERIOD, *delay_on);
 246         rt2x00_set_field32(&reg, LEDCSR_OFF_PERIOD, *delay_off);
 247         rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
 248
 249         return 0;
 250 }
 251
 252 static void rt2400pci_init_led(struct rt2x00_dev *rt2x00dev,
 253                                struct rt2x00_led *led,
 254                                enum led_type type)
 255 {
 256         led->rt2x00dev = rt2x00dev;
 257         led->type = type;
 258         led->led_dev.brightness_set = rt2400pci_brightness_set;
 259         led->led_dev.blink_set = rt2400pci_blink_set;
 260         led->flags = LED_INITIALIZED;
 261 }
 262 #endif /* CONFIG_RT2X00_LIB_LEDS */
 263
 264 /*
 265  * Configuration handlers.
 266  */
 267 static void rt2400pci_config_filter(struct rt2x00_dev *rt2x00dev,
 268                                     const unsigned int filter_flags)
 269 {
 270         u32 reg;
 271
 272         /*
 273          * Start configuration steps.
 274          * Note that the version error will always be dropped
 275          * since there is no filter for it at this time.
 276          */
 277         rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
 278         rt2x00_set_field32(&reg, RXCSR0_DROP_CRC,
 279                            !(filter_flags & FIF_FCSFAIL));
 280         rt2x00_set_field32(&reg, RXCSR0_DROP_PHYSICAL,
 281                            !(filter_flags & FIF_PLCPFAIL));
 282         rt2x00_set_field32(&reg, RXCSR0_DROP_CONTROL,
 283                            !(filter_flags & FIF_CONTROL));
 284         rt2x00_set_field32(&reg, RXCSR0_DROP_NOT_TO_ME,
 285                            !(filter_flags & FIF_PROMISC_IN_BSS));
 286         rt2x00_set_field32(&reg, RXCSR0_DROP_TODS,
 287                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
 288                            !rt2x00dev->intf_ap_count);
 289         rt2x00_set_field32(&reg, RXCSR0_DROP_VERSION_ERROR, 1);
 290         rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
 291 }
 292
 293 static void rt2400pci_config_intf(struct rt2x00_dev *rt2x00dev,
 294                                   struct rt2x00_intf *intf,
 295                                   struct rt2x00intf_conf *conf,
 296                                   const unsigned int flags)
 297 {
 298         unsigned int bcn_preload;
 299         u32 reg;
 300
 301         if (flags & CONFIG_UPDATE_TYPE) {
 302                 /*
 303                  * Enable beacon config
 304                  */
 305                 bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
 306                 rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
 307                 rt2x00_set_field32(&reg, BCNCSR1_PRELOAD, bcn_preload);
 308                 rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
 309
 310                 /*
 311                  * Enable synchronisation.
 312                  */
 313                 rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
 314                 rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
 315                 rt2x00_set_field32(&reg, CSR14_TSF_SYNC, conf->sync);
 316                 rt2x00_set_field32(&reg, CSR14_TBCN, 1);
 317                 rt2x00pci_register_write(rt2x00dev, CSR14, reg);
 318         }
 319
 320         if (flags & CONFIG_UPDATE_MAC)
 321                 rt2x00pci_register_multiwrite(rt2x00dev, CSR3,
 322                                               conf->mac, sizeof(conf->mac));
 323
 324         if (flags & CONFIG_UPDATE_BSSID)
 325                 rt2x00pci_register_multiwrite(rt2x00dev, CSR5,
 326                                               conf->bssid, sizeof(conf->bssid));
 327 }
 328
 329 static void rt2400pci_config_erp(struct rt2x00_dev *rt2x00dev,
 330                                  struct rt2x00lib_erp *erp)
 331 {
 332         int preamble_mask;
 333         u32 reg;
 334
 335         /*
 336          * When short preamble is enabled, we should set bit 0x08
 337          */
 338         preamble_mask = erp->short_preamble << 3;
 339
 340         rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
 341         rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT,
 342                            erp->ack_timeout);
 343         rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
 344                            erp->ack_consume_time);
 345         rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
 346
 347         rt2x00pci_register_read(rt2x00dev, ARCSR2, &reg);
 348         rt2x00_set_field32(&reg, ARCSR2_SIGNAL, 0x00);
 349         rt2x00_set_field32(&reg, ARCSR2_SERVICE, 0x04);
 350         rt2x00_set_field32(&reg, ARCSR2_LENGTH, GET_DURATION(ACK_SIZE, 10));
 351         rt2x00pci_register_write(rt2x00dev, ARCSR2, reg);
 352
 353         rt2x00pci_register_read(rt2x00dev, ARCSR3, &reg);
 354         rt2x00_set_field32(&reg, ARCSR3_SIGNAL, 0x01 | preamble_mask);
 355         rt2x00_set_field32(&reg, ARCSR3_SERVICE, 0x04);
 356         rt2x00_set_field32(&reg, ARCSR2_LENGTH, GET_DURATION(ACK_SIZE, 20));
 357         rt2x00pci_register_write(rt2x00dev, ARCSR3, reg);
 358
 359         rt2x00pci_register_read(rt2x00dev, ARCSR4, &reg);
 360         rt2x00_set_field32(&reg, ARCSR4_SIGNAL, 0x02 | preamble_mask);
 361         rt2x00_set_field32(&reg, ARCSR4_SERVICE, 0x04);
 362         rt2x00_set_field32(&reg, ARCSR2_LENGTH, GET_DURATION(ACK_SIZE, 55));
 363         rt2x00pci_register_write(rt2x00dev, ARCSR4, reg);
 364
 365         rt2x00pci_register_read(rt2x00dev, ARCSR5, &reg);
 366         rt2x00_set_field32(&reg, ARCSR5_SIGNAL, 0x03 | preamble_mask);
 367         rt2x00_set_field32(&reg, ARCSR5_SERVICE, 0x84);
 368         rt2x00_set_field32(&reg, ARCSR2_LENGTH, GET_DURATION(ACK_SIZE, 110));
 369         rt2x00pci_register_write(rt2x00dev, ARCSR5, reg);
 370
 371         rt2x00pci_register_write(rt2x00dev, ARCSR1, erp->basic_rates);
 372
 373         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 374         rt2x00_set_field32(&reg, CSR11_SLOT_TIME, erp->slot_time);
 375         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 376
 377         rt2x00pci_register_read(rt2x00dev, CSR18, &reg);
 378         rt2x00_set_field32(&reg, CSR18_SIFS, erp->sifs);
 379         rt2x00_set_field32(&reg, CSR18_PIFS, erp->pifs);
 380         rt2x00pci_register_write(rt2x00dev, CSR18, reg);
 381
 382         rt2x00pci_register_read(rt2x00dev, CSR19, &reg);
 383         rt2x00_set_field32(&reg, CSR19_DIFS, erp->difs);
 384         rt2x00_set_field32(&reg, CSR19_EIFS, erp->eifs);
 385         rt2x00pci_register_write(rt2x00dev, CSR19, reg);
 386 }
 387
 388 static void rt2400pci_config_ant(struct rt2x00_dev *rt2x00dev,
 389                                  struct antenna_setup *ant)
 390 {
 391         u8 r1;
 392         u8 r4;
 393
 394         /*
 395          * We should never come here because rt2x00lib is supposed
 396          * to catch this and send us the correct antenna explicitely.
 397          */
 398         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
 399                ant->tx == ANTENNA_SW_DIVERSITY);
 400
 401         rt2400pci_bbp_read(rt2x00dev, 4, &r4);
 402         rt2400pci_bbp_read(rt2x00dev, 1, &r1);
 403
 404         /*
 405          * Configure the TX antenna.
 406          */
 407         switch (ant->tx) {
 408         case ANTENNA_HW_DIVERSITY:
 409                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 1);
 410                 break;
 411         case ANTENNA_A:
 412                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 0);
 413                 break;
 414         case ANTENNA_B:
 415         default:
 416                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 2);
 417                 break;
 418         }
 419
 420         /*
 421          * Configure the RX antenna.
 422          */
 423         switch (ant->rx) {
 424         case ANTENNA_HW_DIVERSITY:
 425                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
 426                 break;
 427         case ANTENNA_A:
 428                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 0);
 429                 break;
 430         case ANTENNA_B:
 431         default:
 432                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
 433                 break;
 434         }
 435
 436         rt2400pci_bbp_write(rt2x00dev, 4, r4);
 437         rt2400pci_bbp_write(rt2x00dev, 1, r1);
 438 }
 439
 440 static void rt2400pci_config_channel(struct rt2x00_dev *rt2x00dev,
 441                                      struct rf_channel *rf)
 442 {
 443         /*
 444          * Switch on tuning bits.
 445          */
 446         rt2x00_set_field32(&rf->rf1, RF1_TUNER, 1);
 447         rt2x00_set_field32(&rf->rf3, RF3_TUNER, 1);
 448
 449         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 450         rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
 451         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 452
 453         /*
 454          * RF2420 chipset don't need any additional actions.
 455          */
 456         if (rt2x00_rf(&rt2x00dev->chip, RF2420))
 457                 return;
 458
 459         /*
 460          * For the RT2421 chipsets we need to write an invalid
 461          * reference clock rate to activate auto_tune.
 462          * After that we set the value back to the correct channel.
 463          */
 464         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 465         rt2400pci_rf_write(rt2x00dev, 2, 0x000c2a32);
 466         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 467
 468         msleep(1);
 469
 470         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 471         rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
 472         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 473
 474         msleep(1);
 475
 476         /*
 477          * Switch off tuning bits.
 478          */
 479         rt2x00_set_field32(&rf->rf1, RF1_TUNER, 0);
 480         rt2x00_set_field32(&rf->rf3, RF3_TUNER, 0);
 481
 482         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 483         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 484
 485         /*
 486          * Clear false CRC during channel switch.
 487          */
 488         rt2x00pci_register_read(rt2x00dev, CNT0, &rf->rf1);
 489 }
 490
 491 static void rt2400pci_config_txpower(struct rt2x00_dev *rt2x00dev, int txpower)
 492 {
 493         rt2400pci_bbp_write(rt2x00dev, 3, TXPOWER_TO_DEV(txpower));
 494 }
 495
 496 static void rt2400pci_config_retry_limit(struct rt2x00_dev *rt2x00dev,
 497                                          struct rt2x00lib_conf *libconf)
 498 {
 499         u32 reg;
 500
 501         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 502         rt2x00_set_field32(&reg, CSR11_LONG_RETRY,
 503                            libconf->conf->long_frame_max_tx_count);
 504         rt2x00_set_field32(&reg, CSR11_SHORT_RETRY,
 505                            libconf->conf->short_frame_max_tx_count);
 506         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 507 }
 508
 509 static void rt2400pci_config_duration(struct rt2x00_dev *rt2x00dev,
 510                                       struct rt2x00lib_conf *libconf)
 511 {
 512         u32 reg;
 513
 514         rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
 515         rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
 516         rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
 517         rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
 518
 519         rt2x00pci_register_read(rt2x00dev, CSR12, &reg);
 520         rt2x00_set_field32(&reg, CSR12_BEACON_INTERVAL,
 521                            libconf->conf->beacon_int * 16);
 522         rt2x00_set_field32(&reg, CSR12_CFP_MAX_DURATION,
 523                            libconf->conf->beacon_int * 16);
 524         rt2x00pci_register_write(rt2x00dev, CSR12, reg);
 525 }
 526
 527 static void rt2400pci_config_ps(struct rt2x00_dev *rt2x00dev,
 528                                 struct rt2x00lib_conf *libconf)
 529 {
 530         enum dev_state state =
 531             (libconf->conf->flags & IEEE80211_CONF_PS) ?
 532                 STATE_SLEEP : STATE_AWAKE;
 533         u32 reg;
 534
 535         if (state == STATE_SLEEP) {
 536                 rt2x00pci_register_read(rt2x00dev, CSR20, &reg);
 537                 rt2x00_set_field32(&reg, CSR20_DELAY_AFTER_TBCN,
 538                                    (libconf->conf->beacon_int - 20) * 16);
 539                 rt2x00_set_field32(&reg, CSR20_TBCN_BEFORE_WAKEUP,
 540                                    libconf->conf->listen_interval - 1);
 541
 542                 /* We must first disable autowake before it can be enabled */
 543                 rt2x00_set_field32(&reg, CSR20_AUTOWAKE, 0);
 544                 rt2x00pci_register_write(rt2x00dev, CSR20, reg);
 545
 546                 rt2x00_set_field32(&reg, CSR20_AUTOWAKE, 1);
 547                 rt2x00pci_register_write(rt2x00dev, CSR20, reg);
 548         }
 549
 550         rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
 551 }
 552
 553 static void rt2400pci_config(struct rt2x00_dev *rt2x00dev,
 554                              struct rt2x00lib_conf *libconf,
 555                              const unsigned int flags)
 556 {
 557         if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
 558                 rt2400pci_config_channel(rt2x00dev, &libconf->rf);
 559         if (flags & IEEE80211_CONF_CHANGE_POWER)
 560                 rt2400pci_config_txpower(rt2x00dev,
 561                                          libconf->conf->power_level);
 562         if (flags & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 563                 rt2400pci_config_retry_limit(rt2x00dev, libconf);
 564         if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL)
 565                 rt2400pci_config_duration(rt2x00dev, libconf);
 566         if (flags & IEEE80211_CONF_CHANGE_PS)
 567                 rt2400pci_config_ps(rt2x00dev, libconf);
 568 }
 569
 570 static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev,
 571                                 const int cw_min, const int cw_max)
 572 {
 573         u32 reg;
 574
 575         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 576         rt2x00_set_field32(&reg, CSR11_CWMIN, cw_min);
 577         rt2x00_set_field32(&reg, CSR11_CWMAX, cw_max);
 578         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 579 }
 580
 581 /*
 582  * Link tuning
 583  */
 584 static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev,
 585                                  struct link_qual *qual)
 586 {
 587         u32 reg;
 588         u8 bbp;
 589
 590         /*
 591          * Update FCS error count from register.
 592          */
 593         rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
 594         qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR);
 595
 596         /*
 597          * Update False CCA count from register.
 598          */
 599         rt2400pci_bbp_read(rt2x00dev, 39, &bbp);
 600         qual->false_cca = bbp;
 601 }
 602
 603 static inline void rt2400pci_set_vgc(struct rt2x00_dev *rt2x00dev,
 604                                      struct link_qual *qual, u8 vgc_level)
 605 {
 606         rt2400pci_bbp_write(rt2x00dev, 13, vgc_level);
 607         qual->vgc_level = vgc_level;
 608         qual->vgc_level_reg = vgc_level;
 609 }
 610
 611 static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev,
 612                                   struct link_qual *qual)
 613 {
 614         rt2400pci_set_vgc(rt2x00dev, qual, 0x08);
 615 }
 616
 617 static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev,
 618                                  struct link_qual *qual, const u32 count)
 619 {
 620         /*
 621          * The link tuner should not run longer then 60 seconds,
 622          * and should run once every 2 seconds.
 623          */
 624         if (count > 60 || !(count & 1))
 625                 return;
 626
 627         /*
 628          * Base r13 link tuning on the false cca count.
 629          */
 630         if ((qual->false_cca > 512) && (qual->vgc_level < 0x20))
 631                 rt2400pci_set_vgc(rt2x00dev, qual, ++qual->vgc_level);
 632         else if ((qual->false_cca < 100) && (qual->vgc_level > 0x08))
 633                 rt2400pci_set_vgc(rt2x00dev, qual, --qual->vgc_level);
 634 }
 635
 636 /*
 637  * Initialization functions.
 638  */
 639 static bool rt2400pci_get_entry_state(struct queue_entry *entry)
 640 {
 641         struct queue_entry_priv_pci *entry_priv = entry->priv_data;
 642         u32 word;
 643
 644         if (entry->queue->qid == QID_RX) {
 645                 rt2x00_desc_read(entry_priv->desc, 0, &word);
 646
 647                 return rt2x00_get_field32(word, RXD_W0_OWNER_NIC);
 648         } else {
 649                 rt2x00_desc_read(entry_priv->desc, 0, &word);
 650
 651                 return (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
 652                         rt2x00_get_field32(word, TXD_W0_VALID));
 653         }
 654 }
 655
 656 static void rt2400pci_clear_entry(struct queue_entry *entry)
 657 {
 658         struct queue_entry_priv_pci *entry_priv = entry->priv_data;
 659         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
 660         u32 word;
 661
 662         if (entry->queue->qid == QID_RX) {
 663                 rt2x00_desc_read(entry_priv->desc, 2, &word);
 664                 rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH, entry->skb->len);
 665                 rt2x00_desc_write(entry_priv->desc, 2, word);
 666
 667                 rt2x00_desc_read(entry_priv->desc, 1, &word);
 668                 rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, skbdesc->skb_dma);
 669                 rt2x00_desc_write(entry_priv->desc, 1, word);
 670
 671                 rt2x00_desc_read(entry_priv->desc, 0, &word);
 672                 rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
 673                 rt2x00_desc_write(entry_priv->desc, 0, word);
 674         } else {
 675                 rt2x00_desc_read(entry_priv->desc, 0, &word);
 676                 rt2x00_set_field32(&word, TXD_W0_VALID, 0);
 677                 rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
 678                 rt2x00_desc_write(entry_priv->desc, 0, word);
 679         }
 680 }
 681
 682 static int rt2400pci_init_queues(struct rt2x00_dev *rt2x00dev)
 683 {
 684         struct queue_entry_priv_pci *entry_priv;
 685         u32 reg;
 686
 687         /*
 688          * Initialize registers.
 689          */
 690         rt2x00pci_register_read(rt2x00dev, TXCSR2, &reg);
 691         rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size);
 692         rt2x00_set_field32(&reg, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit);
 693         rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM, rt2x00dev->bcn[1].limit);
 694         rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit);
 695         rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
 696
 697         entry_priv = rt2x00dev->tx[1].entries[0].priv_data;
 698         rt2x00pci_register_read(rt2x00dev, TXCSR3, &reg);
 699         rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER,
 700                            entry_priv->desc_dma);
 701         rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
 702
 703         entry_priv = rt2x00dev->tx[0].entries[0].priv_data;
 704         rt2x00pci_register_read(rt2x00dev, TXCSR5, &reg);
 705         rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER,
 706                            entry_priv->desc_dma);
 707         rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
 708
 709         entry_priv = rt2x00dev->bcn[1].entries[0].priv_data;
 710         rt2x00pci_register_read(rt2x00dev, TXCSR4, &reg);
 711         rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER,
 712                            entry_priv->desc_dma);
 713         rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
 714
 715         entry_priv = rt2x00dev->bcn[0].entries[0].priv_data;
 716         rt2x00pci_register_read(rt2x00dev, TXCSR6, &reg);
 717         rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER,
 718                            entry_priv->desc_dma);
 719         rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
 720
 721         rt2x00pci_register_read(rt2x00dev, RXCSR1, &reg);
 722         rt2x00_set_field32(&reg, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
 723         rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->limit);
 724         rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
 725
 726         entry_priv = rt2x00dev->rx->entries[0].priv_data;
 727         rt2x00pci_register_read(rt2x00dev, RXCSR2, &reg);
 728         rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER,
 729                            entry_priv->desc_dma);
 730         rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
 731
 732         return 0;
 733 }
 734
 735 static int rt2400pci_init_registers(struct rt2x00_dev *rt2x00dev)
 736 {
 737         u32 reg;
 738
 739         rt2x00pci_register_write(rt2x00dev, PSCSR0, 0x00020002);
 740         rt2x00pci_register_write(rt2x00dev, PSCSR1, 0x00000002);
 741         rt2x00pci_register_write(rt2x00dev, PSCSR2, 0x00023f20);
 742         rt2x00pci_register_write(rt2x00dev, PSCSR3, 0x00000002);
 743
 744         rt2x00pci_register_read(rt2x00dev, TIMECSR, &reg);
 745         rt2x00_set_field32(&reg, TIMECSR_US_COUNT, 33);
 746         rt2x00_set_field32(&reg, TIMECSR_US_64_COUNT, 63);
 747         rt2x00_set_field32(&reg, TIMECSR_BEACON_EXPECT, 0);
 748         rt2x00pci_register_write(rt2x00dev, TIMECSR, reg);
 749
 750         rt2x00pci_register_read(rt2x00dev, CSR9, &reg);
 751         rt2x00_set_field32(&reg, CSR9_MAX_FRAME_UNIT,
 752                            (rt2x00dev->rx->data_size / 128));
 753         rt2x00pci_register_write(rt2x00dev, CSR9, reg);
 754
 755         rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
 756         rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 0);
 757         rt2x00_set_field32(&reg, CSR14_TSF_SYNC, 0);
 758         rt2x00_set_field32(&reg, CSR14_TBCN, 0);
 759         rt2x00_set_field32(&reg, CSR14_TCFP, 0);
 760         rt2x00_set_field32(&reg, CSR14_TATIMW, 0);
 761         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
 762         rt2x00_set_field32(&reg, CSR14_CFP_COUNT_PRELOAD, 0);
 763         rt2x00_set_field32(&reg, CSR14_TBCM_PRELOAD, 0);
 764         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
 765
 766         rt2x00pci_register_write(rt2x00dev, CNT3, 0x3f080000);
 767
 768         rt2x00pci_register_read(rt2x00dev, ARCSR0, &reg);
 769         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA0, 133);
 770         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID0, 134);
 771         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA1, 136);
 772         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID1, 135);
 773         rt2x00pci_register_write(rt2x00dev, ARCSR0, reg);
 774
 775         rt2x00pci_register_read(rt2x00dev, RXCSR3, &reg);
 776         rt2x00_set_field32(&reg, RXCSR3_BBP_ID0, 3); /* Tx power.*/
 777         rt2x00_set_field32(&reg, RXCSR3_BBP_ID0_VALID, 1);
 778         rt2x00_set_field32(&reg, RXCSR3_BBP_ID1, 32); /* Signal */
 779         rt2x00_set_field32(&reg, RXCSR3_BBP_ID1_VALID, 1);
 780         rt2x00_set_field32(&reg, RXCSR3_BBP_ID2, 36); /* Rssi */
 781         rt2x00_set_field32(&reg, RXCSR3_BBP_ID2_VALID, 1);
 782         rt2x00pci_register_write(rt2x00dev, RXCSR3, reg);
 783
 784         rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
 785
 786         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 787                 return -EBUSY;
 788
 789         rt2x00pci_register_write(rt2x00dev, MACCSR0, 0x00217223);
 790         rt2x00pci_register_write(rt2x00dev, MACCSR1, 0x00235518);
 791
 792         rt2x00pci_register_read(rt2x00dev, MACCSR2, &reg);
 793         rt2x00_set_field32(&reg, MACCSR2_DELAY, 64);
 794         rt2x00pci_register_write(rt2x00dev, MACCSR2, reg);
 795
 796         rt2x00pci_register_read(rt2x00dev, RALINKCSR, &reg);
 797         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA0, 17);
 798         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID0, 154);
 799         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA1, 0);
 800         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID1, 154);
 801         rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg);
 802
 803         rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
 804         rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 1);
 805         rt2x00_set_field32(&reg, CSR1_BBP_RESET, 0);
 806         rt2x00_set_field32(&reg, CSR1_HOST_READY, 0);
 807         rt2x00pci_register_write(rt2x00dev, CSR1, reg);
 808
 809         rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
 810         rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 0);
 811         rt2x00_set_field32(&reg, CSR1_HOST_READY, 1);
 812         rt2x00pci_register_write(rt2x00dev, CSR1, reg);
 813
 814         /*
 815          * We must clear the FCS and FIFO error count.
 816          * These registers are cleared on read,
 817          * so we may pass a useless variable to store the value.
 818          */
 819         rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
 820         rt2x00pci_register_read(rt2x00dev, CNT4, &reg);
 821
 822         return 0;
 823 }
 824
 825 static int rt2400pci_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
 826 {
 827         unsigned int i;
 828         u8 value;
 829
 830         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 831                 rt2400pci_bbp_read(rt2x00dev, 0, &value);
 832                 if ((value != 0xff) && (value != 0x00))
 833                         return 0;
 834                 udelay(REGISTER_BUSY_DELAY);
 835         }
 836
 837         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 838         return -EACCES;
 839 }
 840
 841 static int rt2400pci_init_bbp(struct rt2x00_dev *rt2x00dev)
 842 {
 843         unsigned int i;
 844         u16 eeprom;
 845         u8 reg_id;
 846         u8 value;
 847
 848         if (unlikely(rt2400pci_wait_bbp_ready(rt2x00dev)))
 849                 return -EACCES;
 850
 851         rt2400pci_bbp_write(rt2x00dev, 1, 0x00);
 852         rt2400pci_bbp_write(rt2x00dev, 3, 0x27);
 853         rt2400pci_bbp_write(rt2x00dev, 4, 0x08);
 854         rt2400pci_bbp_write(rt2x00dev, 10, 0x0f);
 855         rt2400pci_bbp_write(rt2x00dev, 15, 0x72);
 856         rt2400pci_bbp_write(rt2x00dev, 16, 0x74);
 857         rt2400pci_bbp_write(rt2x00dev, 17, 0x20);
 858         rt2400pci_bbp_write(rt2x00dev, 18, 0x72);
 859         rt2400pci_bbp_write(rt2x00dev, 19, 0x0b);
 860         rt2400pci_bbp_write(rt2x00dev, 20, 0x00);
 861         rt2400pci_bbp_write(rt2x00dev, 28, 0x11);
 862         rt2400pci_bbp_write(rt2x00dev, 29, 0x04);
 863         rt2400pci_bbp_write(rt2x00dev, 30, 0x21);
 864         rt2400pci_bbp_write(rt2x00dev, 31, 0x00);
 865
 866         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 867                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 868
 869                 if (eeprom != 0xffff && eeprom != 0x0000) {
 870                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 871                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 872                         rt2400pci_bbp_write(rt2x00dev, reg_id, value);
 873                 }
 874         }
 875
 876         return 0;
 877 }
 878
 879 /*
 880  * Device state switch handlers.
 881  */
 882 static void rt2400pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
 883                                 enum dev_state state)
 884 {
 885         u32 reg;
 886
 887         rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
 888         rt2x00_set_field32(&reg, RXCSR0_DISABLE_RX,
 889                            (state == STATE_RADIO_RX_OFF) ||
 890                            (state == STATE_RADIO_RX_OFF_LINK));
 891         rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
 892 }
 893
 894 static void rt2400pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 895                                  enum dev_state state)
 896 {
 897         int mask = (state == STATE_RADIO_IRQ_OFF);
 898         u32 reg;
 899
 900         /*
 901          * When interrupts are being enabled, the interrupt registers
 902          * should clear the register to assure a clean state.
 903          */
 904         if (state == STATE_RADIO_IRQ_ON) {
 905                 rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
 906                 rt2x00pci_register_write(rt2x00dev, CSR7, reg);
 907         }
 908
 909         /*
 910          * Only toggle the interrupts bits we are going to use.
 911          * Non-checked interrupt bits are disabled by default.
 912          */
 913         rt2x00pci_register_read(rt2x00dev, CSR8, &reg);
 914         rt2x00_set_field32(&reg, CSR8_TBCN_EXPIRE, mask);
 915         rt2x00_set_field32(&reg, CSR8_TXDONE_TXRING, mask);
 916         rt2x00_set_field32(&reg, CSR8_TXDONE_ATIMRING, mask);
 917         rt2x00_set_field32(&reg, CSR8_TXDONE_PRIORING, mask);
 918         rt2x00_set_field32(&reg, CSR8_RXDONE, mask);
 919         rt2x00pci_register_write(rt2x00dev, CSR8, reg);
 920 }
 921
 922 static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 923 {
 924         /*
 925          * Initialize all registers.
 926          */
 927         if (unlikely(rt2400pci_init_queues(rt2x00dev) ||
 928                      rt2400pci_init_registers(rt2x00dev) ||
 929                      rt2400pci_init_bbp(rt2x00dev)))
 930                 return -EIO;
 931
 932         return 0;
 933 }
 934
 935 static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev)
 936 {
 937         u32 reg;
 938
 939         rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0);
 940
 941         /*
 942          * Disable synchronisation.
 943          */
 944         rt2x00pci_register_write(rt2x00dev, CSR14, 0);
 945
 946         /*
 947          * Cancel RX and TX.
 948          */
 949         rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
 950         rt2x00_set_field32(&reg, TXCSR0_ABORT, 1);
 951         rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
 952 }
 953
 954 static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
 955                                enum dev_state state)
 956 {
 957         u32 reg;
 958         unsigned int i;
 959         char put_to_sleep;
 960         char bbp_state;
 961         char rf_state;
 962
 963         put_to_sleep = (state != STATE_AWAKE);
 964
 965         rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
 966         rt2x00_set_field32(&reg, PWRCSR1_SET_STATE, 1);
 967         rt2x00_set_field32(&reg, PWRCSR1_BBP_DESIRE_STATE, state);
 968         rt2x00_set_field32(&reg, PWRCSR1_RF_DESIRE_STATE, state);
 969         rt2x00_set_field32(&reg, PWRCSR1_PUT_TO_SLEEP, put_to_sleep);
 970         rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
 971
 972         /*
 973          * Device is not guaranteed to be in the requested state yet.
 974          * We must wait until the register indicates that the
 975          * device has entered the correct state.
 976          */
 977         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 978                 rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
 979                 bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
 980                 rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
 981                 if (bbp_state == state && rf_state == state)
 982                         return 0;
 983                 msleep(10);
 984         }
 985
 986         return -EBUSY;
 987 }
 988
 989 static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 990                                       enum dev_state state)
 991 {
 992         int retval = 0;
 993
 994         switch (state) {
 995         case STATE_RADIO_ON:
 996                 retval = rt2400pci_enable_radio(rt2x00dev);
 997                 break;
 998         case STATE_RADIO_OFF:
 999                 rt2400pci_disable_radio(rt2x00dev);
1000                 break;
1001         case STATE_RADIO_RX_ON:
1002         case STATE_RADIO_RX_ON_LINK:
1003         case STATE_RADIO_RX_OFF:
1004         case STATE_RADIO_RX_OFF_LINK:
1005                 rt2400pci_toggle_rx(rt2x00dev, state);
1006                 break;
1007         case STATE_RADIO_IRQ_ON:
1008         case STATE_RADIO_IRQ_OFF:
1009                 rt2400pci_toggle_irq(rt2x00dev, state);
1010                 break;
1011         case STATE_DEEP_SLEEP:
1012         case STATE_SLEEP:
1013         case STATE_STANDBY:
1014         case STATE_AWAKE:
1015                 retval = rt2400pci_set_state(rt2x00dev, state);
1016                 break;
1017         default:
1018                 retval = -ENOTSUPP;
1019                 break;
1020         }
1021
1022         if (unlikely(retval))
1023                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1024                       state, retval);
1025
1026         return retval;
1027 }
1028
1029 /*
1030  * TX descriptor initialization
1031  */
1032 static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1033                                     struct sk_buff *skb,
1034                                     struct txentry_desc *txdesc)
1035 {
1036         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1037         struct queue_entry_priv_pci *entry_priv = skbdesc->entry->priv_data;
1038         __le32 *txd = skbdesc->desc;
1039         u32 word;
1040
1041         /*
1042          * Start writing the descriptor words.
1043          */
1044         rt2x00_desc_read(entry_priv->desc, 1, &word);
1045         rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, skbdesc->skb_dma);
1046         rt2x00_desc_write(entry_priv->desc, 1, word);
1047
1048         rt2x00_desc_read(txd, 2, &word);
1049         rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH, skb->len);
1050         rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, skb->len);
1051         rt2x00_desc_write(txd, 2, word);
1052
1053         rt2x00_desc_read(txd, 3, &word);
1054         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->signal);
1055         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_REGNUM, 5);
1056         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_BUSY, 1);
1057         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, txdesc->service);
1058         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_REGNUM, 6);
1059         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_BUSY, 1);
1060         rt2x00_desc_write(txd, 3, word);
1061
1062         rt2x00_desc_read(txd, 4, &word);
1063         rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, txdesc->length_low);
1064         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_REGNUM, 8);
1065         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_BUSY, 1);
1066         rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, txdesc->length_high);
1067         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_REGNUM, 7);
1068         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_BUSY, 1);
1069         rt2x00_desc_write(txd, 4, word);
1070
1071         rt2x00_desc_read(txd, 0, &word);
1072         rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
1073         rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1074         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1075                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1076         rt2x00_set_field32(&word, TXD_W0_ACK,
1077                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1078         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1079                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1080         rt2x00_set_field32(&word, TXD_W0_RTS,
1081                            test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags));
1082         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1083         rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1084                            test_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags));
1085         rt2x00_desc_write(txd, 0, word);
1086 }
1087
1088 /*
1089  * TX data initialization
1090  */
1091 static void rt2400pci_write_beacon(struct queue_entry *entry)
1092 {
1093         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1094         struct queue_entry_priv_pci *entry_priv = entry->priv_data;
1095         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1096         u32 word;
1097         u32 reg;
1098
1099         /*
1100          * Disable beaconing while we are reloading the beacon data,
1101          * otherwise we might be sending out invalid data.
1102          */
1103         rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
1104         rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 0);
1105         rt2x00_set_field32(&reg, CSR14_TBCN, 0);
1106         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
1107         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
1108
1109         /*
1110          * Replace rt2x00lib allocated descriptor with the
1111          * pointer to the _real_ hardware descriptor.
1112          * After that, map the beacon to DMA and update the
1113          * descriptor.
1114          */
1115         memcpy(entry_priv->desc, skbdesc->desc, skbdesc->desc_len);
1116         skbdesc->desc = entry_priv->desc;
1117
1118         rt2x00queue_map_txskb(rt2x00dev, entry->skb);
1119
1120         rt2x00_desc_read(entry_priv->desc, 1, &word);
1121         rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, skbdesc->skb_dma);
1122         rt2x00_desc_write(entry_priv->desc, 1, word);
1123 }
1124
1125 static void rt2400pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1126                                     const enum data_queue_qid queue)
1127 {
1128         u32 reg;
1129
1130         if (queue == QID_BEACON) {
1131                 rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
1132                 if (!rt2x00_get_field32(reg, CSR14_BEACON_GEN)) {
1133                         rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
1134                         rt2x00_set_field32(&reg, CSR14_TBCN, 1);
1135                         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 1);
1136                         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
1137                 }
1138                 return;
1139         }
1140
1141         rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
1142         rt2x00_set_field32(&reg, TXCSR0_KICK_PRIO, (queue == QID_AC_BE));
1143         rt2x00_set_field32(&reg, TXCSR0_KICK_TX, (queue == QID_AC_BK));
1144         rt2x00_set_field32(&reg, TXCSR0_KICK_ATIM, (queue == QID_ATIM));
1145         rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
1146 }
1147
1148 /*
1149  * RX control handlers
1150  */
1151 static void rt2400pci_fill_rxdone(struct queue_entry *entry,
1152                                   struct rxdone_entry_desc *rxdesc)
1153 {
1154         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1155         struct queue_entry_priv_pci *entry_priv = entry->priv_data;
1156         u32 word0;
1157         u32 word2;
1158         u32 word3;
1159         u32 word4;
1160         u64 tsf;
1161         u32 rx_low;
1162         u32 rx_high;
1163
1164         rt2x00_desc_read(entry_priv->desc, 0, &word0);
1165         rt2x00_desc_read(entry_priv->desc, 2, &word2);
1166         rt2x00_desc_read(entry_priv->desc, 3, &word3);
1167         rt2x00_desc_read(entry_priv->desc, 4, &word4);
1168
1169         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1170                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1171         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1172                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1173
1174         /*
1175          * We only get the lower 32bits from the timestamp,
1176          * to get the full 64bits we must complement it with
1177          * the timestamp from get_tsf().
1178          * Note that when a wraparound of the lower 32bits
1179          * has occurred between the frame arrival and the get_tsf()
1180          * call, we must decrease the higher 32bits with 1 to get
1181          * to correct value.
1182          */
1183         tsf = rt2x00dev->ops->hw->get_tsf(rt2x00dev->hw);
1184         rx_low = rt2x00_get_field32(word4, RXD_W4_RX_END_TIME);
1185         rx_high = upper_32_bits(tsf);
1186
1187         if ((u32)tsf <= rx_low)
1188                 rx_high--;
1189
1190         /*
1191          * Obtain the status about this packet.
1192          * The signal is the PLCP value, and needs to be stripped
1193          * of the preamble bit (0x08).
1194          */
1195         rxdesc->timestamp = ((u64)rx_high << 32) | rx_low;
1196         rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL) & ~0x08;
1197         rxdesc->rssi = rt2x00_get_field32(word2, RXD_W3_RSSI) -
1198             entry->queue->rt2x00dev->rssi_offset;
1199         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1200
1201         rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1202         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1203                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1204 }
1205
1206 /*
1207  * Interrupt functions.
1208  */
1209 static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
1210                              const enum data_queue_qid queue_idx)
1211 {
1212         struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
1213         struct queue_entry_priv_pci *entry_priv;
1214         struct queue_entry *entry;
1215         struct txdone_entry_desc txdesc;
1216         u32 word;
1217
1218         while (!rt2x00queue_empty(queue)) {
1219                 entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
1220                 entry_priv = entry->priv_data;
1221                 rt2x00_desc_read(entry_priv->desc, 0, &word);
1222
1223                 if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
1224                     !rt2x00_get_field32(word, TXD_W0_VALID))
1225                         break;
1226
1227                 /*
1228                  * Obtain the status about this packet.
1229                  */
1230                 txdesc.flags = 0;
1231                 switch (rt2x00_get_field32(word, TXD_W0_RESULT)) {
1232                 case 0: /* Success */
1233                 case 1: /* Success with retry */
1234                         __set_bit(TXDONE_SUCCESS, &txdesc.flags);
1235                         break;
1236                 case 2: /* Failure, excessive retries */
1237                         __set_bit(TXDONE_EXCESSIVE_RETRY, &txdesc.flags);
1238                         /* Don't break, this is a failed frame! */
1239                 default: /* Failure */
1240                         __set_bit(TXDONE_FAILURE, &txdesc.flags);
1241                 }
1242                 txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
1243
1244                 rt2x00lib_txdone(entry, &txdesc);
1245         }
1246 }
1247
1248 static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
1249 {
1250         struct rt2x00_dev *rt2x00dev = dev_instance;
1251         u32 reg;
1252
1253         /*
1254          * Get the interrupt sources & saved to local variable.
1255          * Write register value back to clear pending interrupts.
1256          */
1257         rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
1258         rt2x00pci_register_write(rt2x00dev, CSR7, reg);
1259
1260         if (!reg)
1261                 return IRQ_NONE;
1262
1263         if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
1264                 return IRQ_HANDLED;
1265
1266         /*
1267          * Handle interrupts, walk through all bits
1268          * and run the tasks, the bits are checked in order of
1269          * priority.
1270          */
1271
1272         /*
1273          * 1 - Beacon timer expired interrupt.
1274          */
1275         if (rt2x00_get_field32(reg, CSR7_TBCN_EXPIRE))
1276                 rt2x00lib_beacondone(rt2x00dev);
1277
1278         /*
1279          * 2 - Rx ring done interrupt.
1280          */
1281         if (rt2x00_get_field32(reg, CSR7_RXDONE))
1282                 rt2x00pci_rxdone(rt2x00dev);
1283
1284         /*
1285          * 3 - Atim ring transmit done interrupt.
1286          */
1287         if (rt2x00_get_field32(reg, CSR7_TXDONE_ATIMRING))
1288                 rt2400pci_txdone(rt2x00dev, QID_ATIM);
1289
1290         /*
1291          * 4 - Priority ring transmit done interrupt.
1292          */
1293         if (rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING))
1294                 rt2400pci_txdone(rt2x00dev, QID_AC_BE);
1295
1296         /*
1297          * 5 - Tx ring transmit done interrupt.
1298          */
1299         if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
1300                 rt2400pci_txdone(rt2x00dev, QID_AC_BK);
1301
1302         return IRQ_HANDLED;
1303 }
1304
1305 /*
1306  * Device probe functions.
1307  */
1308 static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1309 {
1310         struct eeprom_93cx6 eeprom;
1311         u32 reg;
1312         u16 word;
1313         u8 *mac;
1314
1315         rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
1316
1317         eeprom.data = rt2x00dev;
1318         eeprom.register_read = rt2400pci_eepromregister_read;
1319         eeprom.register_write = rt2400pci_eepromregister_write;
1320         eeprom.width = rt2x00_get_field32(reg, CSR21_TYPE_93C46) ?
1321             PCI_EEPROM_WIDTH_93C46 : PCI_EEPROM_WIDTH_93C66;
1322         eeprom.reg_data_in = 0;
1323         eeprom.reg_data_out = 0;
1324         eeprom.reg_data_clock = 0;
1325         eeprom.reg_chip_select = 0;
1326
1327         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
1328                                EEPROM_SIZE / sizeof(u16));
1329
1330         /*
1331          * Start validation of the data that has been read.
1332          */
1333         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1334         if (!is_valid_ether_addr(mac)) {
1335                 random_ether_addr(mac);
1336                 EEPROM(rt2x00dev, "MAC: %pM\n", mac);
1337         }
1338
1339         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1340         if (word == 0xffff) {
1341                 ERROR(rt2x00dev, "Invalid EEPROM data detected.\n");
1342                 return -EINVAL;
1343         }
1344
1345         return 0;
1346 }
1347
1348 static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
1349 {
1350         u32 reg;
1351         u16 value;
1352         u16 eeprom;
1353
1354         /*
1355          * Read EEPROM word for configuration.
1356          */
1357         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1358
1359         /*
1360          * Identify RF chipset.
1361          */
1362         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1363         rt2x00pci_register_read(rt2x00dev, CSR0, &reg);
1364         rt2x00_set_chip(rt2x00dev, RT2460, value, reg);
1365
1366         if (!rt2x00_rf(&rt2x00dev->chip, RF2420) &&
1367             !rt2x00_rf(&rt2x00dev->chip, RF2421)) {
1368                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1369                 return -ENODEV;
1370         }
1371
1372         /*
1373          * Identify default antenna configuration.
1374          */
1375         rt2x00dev->default_ant.tx =
1376             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1377         rt2x00dev->default_ant.rx =
1378             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1379
1380         /*
1381          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1382          * I am not 100% sure about this, but the legacy drivers do not
1383          * indicate antenna swapping in software is required when
1384          * diversity is enabled.
1385          */
1386         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1387                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1388         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1389                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1390
1391         /*
1392          * Store led mode, for correct led behaviour.
1393          */
1394 #ifdef CONFIG_RT2X00_LIB_LEDS
1395         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1396
1397         rt2400pci_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1398         if (value == LED_MODE_TXRX_ACTIVITY || value == LED_MODE_DEFAULT)
1399                 rt2400pci_init_led(rt2x00dev, &rt2x00dev->led_qual,
1400                                    LED_TYPE_ACTIVITY);
1401 #endif /* CONFIG_RT2X00_LIB_LEDS */
1402
1403         /*
1404          * Detect if this device has an hardware controlled radio.
1405          */
1406 #ifdef CONFIG_RT2X00_LIB_RFKILL
1407         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1408                 __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
1409 #endif /* CONFIG_RT2X00_LIB_RFKILL */
1410
1411         /*
1412          * Check if the BBP tuning should be enabled.
1413          */
1414         if (!rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
1415                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1416
1417         return 0;
1418 }
1419
1420 /*
1421  * RF value list for RF2420 & RF2421
1422  * Supports: 2.4 GHz
1423  */
1424 static const struct rf_channel rf_vals_b[] = {
1425         { 1,  0x00022058, 0x000c1fda, 0x00000101, 0 },
1426         { 2,  0x00022058, 0x000c1fee, 0x00000101, 0 },
1427         { 3,  0x00022058, 0x000c2002, 0x00000101, 0 },
1428         { 4,  0x00022058, 0x000c2016, 0x00000101, 0 },
1429         { 5,  0x00022058, 0x000c202a, 0x00000101, 0 },
1430         { 6,  0x00022058, 0x000c203e, 0x00000101, 0 },
1431         { 7,  0x00022058, 0x000c2052, 0x00000101, 0 },
1432         { 8,  0x00022058, 0x000c2066, 0x00000101, 0 },
1433         { 9,  0x00022058, 0x000c207a, 0x00000101, 0 },
1434         { 10, 0x00022058, 0x000c208e, 0x00000101, 0 },
1435         { 11, 0x00022058, 0x000c20a2, 0x00000101, 0 },
1436         { 12, 0x00022058, 0x000c20b6, 0x00000101, 0 },
1437         { 13, 0x00022058, 0x000c20ca, 0x00000101, 0 },
1438         { 14, 0x00022058, 0x000c20fa, 0x00000101, 0 },
1439 };
1440
1441 static int rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1442 {
1443         struct hw_mode_spec *spec = &rt2x00dev->spec;
1444         struct channel_info *info;
1445         char *tx_power;
1446         unsigned int i;
1447
1448         /*
1449          * Initialize all hw fields.
1450          */
1451         rt2x00dev->hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1452                                IEEE80211_HW_SIGNAL_DBM |
1453                                IEEE80211_HW_SUPPORTS_PS |
1454                                IEEE80211_HW_PS_NULLFUNC_STACK;
1455         rt2x00dev->hw->extra_tx_headroom = 0;
1456
1457         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1458         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1459                                 rt2x00_eeprom_addr(rt2x00dev,
1460                                                    EEPROM_MAC_ADDR_0));
1461
1462         /*
1463          * Initialize hw_mode information.
1464          */
1465         spec->supported_bands = SUPPORT_BAND_2GHZ;
1466         spec->supported_rates = SUPPORT_RATE_CCK;
1467
1468         spec->num_channels = ARRAY_SIZE(rf_vals_b);
1469         spec->channels = rf_vals_b;
1470
1471         /*
1472          * Create channel information array
1473          */
1474         info = kzalloc(spec->num_channels * sizeof(*info), GFP_KERNEL);
1475         if (!info)
1476                 return -ENOMEM;
1477
1478         spec->channels_info = info;
1479
1480         tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1481         for (i = 0; i < 14; i++)
1482                 info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
1483
1484         return 0;
1485 }
1486
1487 static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1488 {
1489         int retval;
1490
1491         /*
1492          * Allocate eeprom data.
1493          */
1494         retval = rt2400pci_validate_eeprom(rt2x00dev);
1495         if (retval)
1496                 return retval;
1497
1498         retval = rt2400pci_init_eeprom(rt2x00dev);
1499         if (retval)
1500                 return retval;
1501
1502         /*
1503          * Initialize hw specifications.
1504          */
1505         retval = rt2400pci_probe_hw_mode(rt2x00dev);
1506         if (retval)
1507                 return retval;
1508
1509         /*
1510          * This device requires the atim queue and DMA-mapped skbs.
1511          */
1512         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1513         __set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
1514
1515         /*
1516          * Set the rssi offset.
1517          */
1518         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1519
1520         return 0;
1521 }
1522
1523 /*
1524  * IEEE80211 stack callback functions.
1525  */
1526 static int rt2400pci_conf_tx(struct ieee80211_hw *hw, u16 queue,
1527                              const struct ieee80211_tx_queue_params *params)
1528 {
1529         struct rt2x00_dev *rt2x00dev = hw->priv;
1530
1531         /*
1532          * We don't support variating cw_min and cw_max variables
1533          * per queue. So by default we only configure the TX queue,
1534          * and ignore all other configurations.
1535          */
1536         if (queue != 0)
1537                 return -EINVAL;
1538
1539         if (rt2x00mac_conf_tx(hw, queue, params))
1540                 return -EINVAL;
1541
1542         /*
1543          * Write configuration to register.
1544          */
1545         rt2400pci_config_cw(rt2x00dev,
1546                             rt2x00dev->tx->cw_min, rt2x00dev->tx->cw_max);
1547
1548         return 0;
1549 }
1550
1551 static u64 rt2400pci_get_tsf(struct ieee80211_hw *hw)
1552 {
1553         struct rt2x00_dev *rt2x00dev = hw->priv;
1554         u64 tsf;
1555         u32 reg;
1556
1557         rt2x00pci_register_read(rt2x00dev, CSR17, &reg);
1558         tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32;
1559         rt2x00pci_register_read(rt2x00dev, CSR16, &reg);
1560         tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER);
1561
1562         return tsf;
1563 }
1564
1565 static int rt2400pci_tx_last_beacon(struct ieee80211_hw *hw)
1566 {
1567         struct rt2x00_dev *rt2x00dev = hw->priv;
1568         u32 reg;
1569
1570         rt2x00pci_register_read(rt2x00dev, CSR15, &reg);
1571         return rt2x00_get_field32(reg, CSR15_BEACON_SENT);
1572 }
1573
1574 static const struct ieee80211_ops rt2400pci_mac80211_ops = {
1575         .tx                     = rt2x00mac_tx,
1576         .start                  = rt2x00mac_start,
1577         .stop                   = rt2x00mac_stop,
1578         .add_interface          = rt2x00mac_add_interface,
1579         .remove_interface       = rt2x00mac_remove_interface,
1580         .config                 = rt2x00mac_config,
1581         .config_interface       = rt2x00mac_config_interface,
1582         .configure_filter       = rt2x00mac_configure_filter,
1583         .get_stats              = rt2x00mac_get_stats,
1584         .bss_info_changed       = rt2x00mac_bss_info_changed,
1585         .conf_tx                = rt2400pci_conf_tx,
1586         .get_tx_stats           = rt2x00mac_get_tx_stats,
1587         .get_tsf                = rt2400pci_get_tsf,
1588         .tx_last_beacon         = rt2400pci_tx_last_beacon,
1589 };
1590
1591 static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
1592         .irq_handler            = rt2400pci_interrupt,
1593         .probe_hw               = rt2400pci_probe_hw,
1594         .initialize             = rt2x00pci_initialize,
1595         .uninitialize           = rt2x00pci_uninitialize,
1596         .get_entry_state        = rt2400pci_get_entry_state,
1597         .clear_entry            = rt2400pci_clear_entry,
1598         .set_device_state       = rt2400pci_set_device_state,
1599         .rfkill_poll            = rt2400pci_rfkill_poll,
1600         .link_stats             = rt2400pci_link_stats,
1601         .reset_tuner            = rt2400pci_reset_tuner,
1602         .link_tuner             = rt2400pci_link_tuner,
1603         .write_tx_desc          = rt2400pci_write_tx_desc,
1604         .write_tx_data          = rt2x00pci_write_tx_data,
1605         .write_beacon           = rt2400pci_write_beacon,
1606         .kick_tx_queue          = rt2400pci_kick_tx_queue,
1607         .fill_rxdone            = rt2400pci_fill_rxdone,
1608         .config_filter          = rt2400pci_config_filter,
1609         .config_intf            = rt2400pci_config_intf,
1610         .config_erp             = rt2400pci_config_erp,
1611         .config_ant             = rt2400pci_config_ant,
1612         .config                 = rt2400pci_config,
1613 };
1614
1615 static const struct data_queue_desc rt2400pci_queue_rx = {
1616         .entry_num              = RX_ENTRIES,
1617         .data_size              = DATA_FRAME_SIZE,
1618         .desc_size              = RXD_DESC_SIZE,
1619         .priv_size              = sizeof(struct queue_entry_priv_pci),
1620 };
1621
1622 static const struct data_queue_desc rt2400pci_queue_tx = {
1623         .entry_num              = TX_ENTRIES,
1624         .data_size              = DATA_FRAME_SIZE,
1625         .desc_size              = TXD_DESC_SIZE,
1626         .priv_size              = sizeof(struct queue_entry_priv_pci),
1627 };
1628
1629 static const struct data_queue_desc rt2400pci_queue_bcn = {
1630         .entry_num              = BEACON_ENTRIES,
1631         .data_size              = MGMT_FRAME_SIZE,
1632         .desc_size              = TXD_DESC_SIZE,
1633         .priv_size              = sizeof(struct queue_entry_priv_pci),
1634 };
1635
1636 static const struct data_queue_desc rt2400pci_queue_atim = {
1637         .entry_num              = ATIM_ENTRIES,
1638         .data_size              = DATA_FRAME_SIZE,
1639         .desc_size              = TXD_DESC_SIZE,
1640         .priv_size              = sizeof(struct queue_entry_priv_pci),
1641 };
1642
1643 static const struct rt2x00_ops rt2400pci_ops = {
1644         .name           = KBUILD_MODNAME,
1645         .max_sta_intf   = 1,
1646         .max_ap_intf    = 1,
1647         .eeprom_size    = EEPROM_SIZE,
1648         .rf_size        = RF_SIZE,
1649         .tx_queues      = NUM_TX_QUEUES,
1650         .rx             = &rt2400pci_queue_rx,
1651         .tx             = &rt2400pci_queue_tx,
1652         .bcn            = &rt2400pci_queue_bcn,
1653         .atim           = &rt2400pci_queue_atim,
1654         .lib            = &rt2400pci_rt2x00_ops,
1655         .hw             = &rt2400pci_mac80211_ops,
1656 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1657         .debugfs        = &rt2400pci_rt2x00debug,
1658 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1659 };
1660
1661 /*
1662  * RT2400pci module information.
1663  */
1664 static struct pci_device_id rt2400pci_device_table[] = {
1665         { PCI_DEVICE(0x1814, 0x0101), PCI_DEVICE_DATA(&rt2400pci_ops) },
1666         { 0, }
1667 };
1668
1669 MODULE_AUTHOR(DRV_PROJECT);
1670 MODULE_VERSION(DRV_VERSION);
1671 MODULE_DESCRIPTION("Ralink RT2400 PCI & PCMCIA Wireless LAN driver.");
1672 MODULE_SUPPORTED_DEVICE("Ralink RT2460 PCI & PCMCIA chipset based cards");
1673 MODULE_DEVICE_TABLE(pci, rt2400pci_device_table);
1674 MODULE_LICENSE("GPL");
1675
1676 static struct pci_driver rt2400pci_driver = {
1677         .name           = KBUILD_MODNAME,
1678         .id_table       = rt2400pci_device_table,
1679         .probe          = rt2x00pci_probe,
1680         .remove         = __devexit_p(rt2x00pci_remove),
1681         .suspend        = rt2x00pci_suspend,
1682         .resume         = rt2x00pci_resume,
1683 };
1684
1685 static int __init rt2400pci_init(void)
1686 {
1687         return pci_register_driver(&rt2400pci_driver);
1688 }
1689
1690 static void __exit rt2400pci_exit(void)
1691 {
1692         pci_unregister_driver(&rt2400pci_driver);
1693 }
1694
1695 module_init(rt2400pci_init);
1696 module_exit(rt2400pci_exit);